You can't talk about the right ascension of a constellation like Leo as a whole. Here's why:

* Constellations are large areas of the sky: They're made up of many stars, which are all at different distances from Earth.

* Right ascension is a celestial coordinate: It describes the position of a specific object in the sky, like a star or a planet.

To find the right ascension of specific stars in Leo:

1. Choose a star: Decide which star in the constellation Leo you want to know the right ascension of. Some of the most famous stars in Leo are Regulus, Denebola, and Algieba.

2. Use a star chart or online resource: Many websites and apps (like Stellarium) can provide the right ascension of stars.

Remember: The right ascension of a star changes slightly over time due to the precession of the Earth's axis.